A hybrid drive sub-assembly for a vehicle has primary gear wheels, secondary gear wheels that are able to be coupled to a secondary shaft, and an intermediate shaft to which intermediate gear wheels are secured for rotation therewith. The primary gear wheel(s) and the secondary gear wheels each meshing permanently with a corresponding gear wheel from among the intermediate gear wheels. This hybrid sub-assembly is equipped with a motorized module having a reversible electric machine, an interface for connecting to the intermediate shaft, a speed reducer, a torsional oscillation damping device and a coupling mechanism that is able to couple and uncouple the reversible electric machine and the intermediate shaft.

A module for a system for driving and synchronizing a countershaft of a transmission gearbox. The module includes a coupling device having an input element intended to be rotationally coupled to a reversible electric machine and an output element intended to be rotationally coupled to the countershaft. The coupling device has a coupled state in which the clutch device is able to transmit torque between the input element and the output element and an uncoupled state in which the input element and the output element are uncoupled. Also included is a lock-up device which has a lock-up state in which said lock-up device blocks the rotation of the input element of the clutch device, and a released state in which said lock-up device allows the input element to rotate.

A gearbox comprising: a first shaft (2) and a second shaft (1), one of the first and second shafts being an input shaft (1) for receiving a drive torque and the other being an output shaft (2) for providing a drive torque; two intermediate shafts (6, 7) by means of which the first and second shafts (2, 1) can be coupled together, each intermediate shaft being arranged so that: (a) it can be coupled to the first shaft (2) via a respective first torque path at any of a plurality of gear ratios (1st-8th), or the respective first torque path can be disengaged; and (b) it can be coupled to the second shaft (1) via a respective second torque path, or the respective second torque path can be disengaged; and a differential torque device (50) coupled between the intermediate shafts (6, 7), the differential torque device (50) being capable of transmitting a differential torque between the intermediate shafts (6, 7).

An axle assembly having a countershaft transmission. The countershaft transmission may operatively connect a rotor shaft of an electric motor to a drive pinion that may be rotatable about a drive pinion axis. The electric motor and the countershaft transmission may be positioned on opposite sides of a differential assembly.

A hybrid powertrain for a vehicle may include a first input shaft selectively connectable to an engine through a first clutch; a second input shaft selectively connectable to the engine through a second clutch and mounted to be coaxial with the first input shaft; a motor input shaft mounted to be coaxial with the first input shaft and to which a motor is connected; a first output shaft and a second output shaft each mounted in parallel to the first input shaft and the second input shaft; a center synchronizing unit mounted between the first input shaft and the motor input shaft and configured to interrupt a connection between the first input shaft and the motor input shaft; a plurality of pairs of circumscription gears configured to form a series of shift ratios used for driving of the vehicle; and a variable transmission mechanism.

A hybrid powertrain may include a first shifting module including a motor input shaft having a motor directly connected to the motor shaft and provided to form two shifting stages having the largest gear ratios in sequence among a series of shifting stages; a second shifting module including an engine input shaft concentrically mounted with the motor input shaft and connected to an engine through a main clutch, and provided to form the remaining shifting stages of the series of shifting stages; a center synchro mounted to intermit the motor input shaft and the engine input shaft; and a continuous variable device provided to implement a state in which the first shifting module forms a gear ratio smaller than a shifting stage having a small gear ratio among the shifting stages of the first shifting module by a continuously controlled friction force.

A hybrid drive sub-assembly for a vehicle has primary gear wheels, secondary gear wheels that are able to be coupled to a secondary shaft, and an intermediate shaft to which intermediate gear wheels are secured for rotation therewith. The primary gear wheel(s) and the secondary gear wheels each meshing permanently with a corresponding gear wheel from among the intermediate gear wheels. This hybrid sub-assembly is equipped with a motorized module having a reversible electric machine, an interface for connecting to the intermediate shaft, a speed reducer, a torsional oscillation damping device and a coupling mechanism that is able to couple and uncouple the reversible electric machine and the intermediate shaft.

A hybrid powertrain for a vehicle includes a first input shaft connected to an engine, a second input shaft connected to the engine and coaxially mounted with the first input shaft, a motor input shaft coaxially mounted with the first input shaft and connected to a motor, first and second output shafts mounted in parallel to the first input shaft and the second input shaft, first and second drive gears connected to the motor input shaft, a first driven gear engaged with the first drive gear, a second driven gear engaged with the second drive gear, a complex synchronizer to couple and separate the first input shaft and the motor input shaft and to couple and separate the first drive gear and the motor input shaft, a third clutch to couple and separate the second drive gear and the motor input shaft, and a plurality of external gear pairs configured to respectively define different gear ratios.

A range-change transmission device, which is a splitter transmission, includes an input shaft, an output shaft, a countershaft, at least one planetary gear set, and a torque adjustment device. A first transmission element of the planetary gear set is arranged coaxially to the output shaft. A second transmission element of the planetary gear set is or can be directly coupled to the countershaft. A third transmission element of the planetary gear set is permanently coupled to the input shaft in a rotationally fixed manner. The countershaft is or can be coupled to the torque adjustment device. The range-change transmission device has a first switching unit, which is provided to couple the countershaft to the output shaft.

Provided is a power drive system for a hybrid power vehicle, including an engine, a hybrid power module, and a dual input shaft speed change mechanism, wherein the hybrid power module consists of a motor, a composite planetary gear mechanism, a clutch, and a brake; the composite planetary gear mechanism is provided with at least four rotating shafts which are respectively connected to a rotor of the motor, a power output shaft of the engine, and a first input shaft and a second input shaft of the dual input shaft speed change mechanism; the brake is disposed on the power output shaft of the engine; and the clutch is disposed between any two of the four rotating shafts of the composite planetary gear mechanism.